Onlyfire Waterproof Roof Cargo Carrier Bag, Black (11 Cubic Feet) Folds up for easy storage, great as a roof bag or a cargo carrier bag Constructed from premium quality rainproof material with sealed seams; Protects luggage against water, sun, dirt, wind and snow Dimensions measure 58 x 18 x 18, Increases vehicle cargo space Side Release Buckle (Contoured), 8 integrated tie-down straps provide secure attachment Universal fit for almost all vehicles with hitch mounted cargo trays